#include <bits/stdc++.h>
using namespace std;
#define fast ios::sync_with_stdio(0);cin.tie(0);
#define s second
#define f first
typedef long long ll;
const ll MOD = 1e9+9;
const ll LOGN = 20;
const ll MAXN = 1e6 + 100;
int A[MAXN], B[MAXN];
int main() {
fast
int N;
cin >> N;
for (int i = 0; i < N; i++)
cin >> A[i] >> B[i];
bool B_zero = true, A_zero = true;
for (int i = 1; i <= N; i++) {
B_zero &= (B[i] == 0);
A_zero &= (A[i] == 0);
}
if (B_zero && A_zero)
cout << "Yes\n";
else if (B_zero != A_zero)
cout << "No\n";
else {
bool check = true;
while (check) {
check = false;
for (int i = 0; i < N; i++) {
if (A[i] > B[i]) {
int excess = (A[i] - B[i] + 1) / 2;
A[i] -= excess * 2;
A[(i+1) % N] += excess;
check = true;
}
}
}
for (int i = 0; i < N; i++) {
if (A[i] != B[i]) {
cout << "No\n";
return 0;
}
}
cout << "Yes\n";
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2512 KB |
Output is correct |
| 4 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2404 KB |
Output is correct |
| 6 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2516 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2516 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2512 KB |
Output is correct |
| 19 |
Correct |
0 ms |
2516 KB |
Output is correct |
| 20 |
Correct |
0 ms |
2392 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 22 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 25 |
Correct |
1 ms |
2648 KB |
Output is correct |
| 26 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 27 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 28 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 29 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 30 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 31 |
Correct |
0 ms |
2516 KB |
Output is correct |
| 32 |
Correct |
0 ms |
2396 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2512 KB |
Output is correct |
| 4 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2404 KB |
Output is correct |
| 6 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2516 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2516 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2512 KB |
Output is correct |
| 19 |
Correct |
0 ms |
2516 KB |
Output is correct |
| 20 |
Correct |
0 ms |
2392 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 22 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 25 |
Correct |
1 ms |
2648 KB |
Output is correct |
| 26 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 27 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 28 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 29 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 30 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 31 |
Correct |
0 ms |
2516 KB |
Output is correct |
| 32 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 33 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 34 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 35 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 36 |
Correct |
0 ms |
2648 KB |
Output is correct |
| 37 |
Correct |
1 ms |
2516 KB |
Output is correct |
| 38 |
Correct |
1 ms |
2524 KB |
Output is correct |
| 39 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 40 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 41 |
Correct |
1 ms |
2648 KB |
Output is correct |
| 42 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 43 |
Correct |
0 ms |
2392 KB |
Output is correct |
| 44 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 45 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 46 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 47 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 48 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 49 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 50 |
Correct |
0 ms |
2512 KB |
Output is correct |
| 51 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 52 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 53 |
Correct |
1 ms |
2592 KB |
Output is correct |
| 54 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 55 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 56 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 57 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 58 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 59 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 60 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 61 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 62 |
Correct |
0 ms |
2396 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2512 KB |
Output is correct |
| 4 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2404 KB |
Output is correct |
| 6 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2516 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2516 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2512 KB |
Output is correct |
| 19 |
Correct |
0 ms |
2516 KB |
Output is correct |
| 20 |
Correct |
0 ms |
2392 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 22 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 25 |
Correct |
1 ms |
2648 KB |
Output is correct |
| 26 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 27 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 28 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 29 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 30 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 31 |
Correct |
0 ms |
2516 KB |
Output is correct |
| 32 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 33 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 34 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 35 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 36 |
Correct |
0 ms |
2648 KB |
Output is correct |
| 37 |
Correct |
1 ms |
2516 KB |
Output is correct |
| 38 |
Correct |
1 ms |
2524 KB |
Output is correct |
| 39 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 40 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 41 |
Correct |
1 ms |
2648 KB |
Output is correct |
| 42 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 43 |
Correct |
0 ms |
2392 KB |
Output is correct |
| 44 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 45 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 46 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 47 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 48 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 49 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 50 |
Correct |
0 ms |
2512 KB |
Output is correct |
| 51 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 52 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 53 |
Correct |
1 ms |
2592 KB |
Output is correct |
| 54 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 55 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 56 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 57 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 58 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 59 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 60 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 61 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 62 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 63 |
Correct |
160 ms |
27384 KB |
Output is correct |
| 64 |
Correct |
86 ms |
12088 KB |
Output is correct |
| 65 |
Correct |
162 ms |
27288 KB |
Output is correct |
| 66 |
Correct |
85 ms |
12112 KB |
Output is correct |
| 67 |
Correct |
91 ms |
13564 KB |
Output is correct |
| 68 |
Correct |
99 ms |
15732 KB |
Output is correct |
| 69 |
Correct |
159 ms |
27872 KB |
Output is correct |
| 70 |
Correct |
88 ms |
12116 KB |
Output is correct |
| 71 |
Correct |
92 ms |
13424 KB |
Output is correct |
| 72 |
Correct |
100 ms |
15732 KB |
Output is correct |
| 73 |
Correct |
160 ms |
27896 KB |
Output is correct |
| 74 |
Correct |
85 ms |
12116 KB |
Output is correct |
| 75 |
Correct |
91 ms |
13332 KB |
Output is correct |
| 76 |
Correct |
108 ms |
15700 KB |
Output is correct |
| 77 |
Correct |
162 ms |
27512 KB |
Output is correct |
| 78 |
Correct |
115 ms |
19800 KB |
Output is correct |
| 79 |
Correct |
116 ms |
19744 KB |
Output is correct |
| 80 |
Correct |
118 ms |
19900 KB |
Output is correct |
| 81 |
Correct |
125 ms |
19712 KB |
Output is correct |
| 82 |
Correct |
73 ms |
12116 KB |
Output is correct |
| 83 |
Correct |
73 ms |
12116 KB |
Output is correct |
| 84 |
Correct |
74 ms |
12012 KB |
Output is correct |
| 85 |
Correct |
163 ms |
28500 KB |
Output is correct |
| 86 |
Correct |
164 ms |
28500 KB |
Output is correct |
| 87 |
Correct |
125 ms |
20784 KB |
Output is correct |
| 88 |
Correct |
125 ms |
20820 KB |
Output is correct |
